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Finding the Fourth Proportional to 18,581.65, 25,643.12 and 10,084.12

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Solution

The fourth proportional to 18,581.65, 25,643.12 and 10,084.12 is: 13,916.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.65 : 25,643.12 = 10,084.12 : x
  2. Step 2: Convert to fraction form
    18,581.65/25,643.12 = 10,084.12/x
  3. Step 3: Cross multiply
    18,581.65x = 25,643.12 × 10,084.12
  4. Step 4: Simplify right side
    18,581.65x = 258,588,184.73
  5. Step 5: Solve for x
    x = 258,588,184.73/18,581.65
  6. Step 6: Final answer
    x = 13,916.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.